diff --git a/requirements.txt b/requirements.txt
index e5fca84..a5b31ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-scipy
-numpy
-matplotlib
-ipympl
-pymatreader
+ipympl==0.9.4
+matplotlib==3.9.2
+numpy==2.1.2
+pymatreader==1.0.0
+scipy==1.14.1